- IMD Calcutta's weather forecast for Tuesday, issued on Monday evening After that forecast, a near-dry Tuesday might have prompted some members of the public to hurl customary brickbats at meteorologists about wrong predictions. Senior meteorologists point out that weather forecasts are always riddled with unavoidable uncertainties that will make predictions appear right or wrong. Such movements of a low-pressure system are not unexpected and represent inherent uncertainties in weather forecasting. Why do IMD forecasts appear ambiguous and easy to misinterpret? A "most likely" rain forecast means 75 per cent or higher probability of rain.

Source: The Telegraph September 07, 2016 21:11 UTC